Asteroid 3421 (1975 WK1) (Yang Zhenning) is a primary astronomical as found by China Zikinshan Observatory on November 26, 1975 in Nanjing.
On May 25, 1997, the Zikinshan Observatory named the international number of the international number of No. 3421 named "Yang Zhenning Star" to praise the physicist Yang Zhenning's scientific contribution.
|Find Articles||Zikinshan Observatory|
|Discovery Date||November 26, 1975|
|Other Name||1975 WK1|
|Class 2008 May 14, 2008|
|Outstanding Day||2.4398937||Recent point||2.0271381||Centrifugal rate||0.0924004|
|Laptos Point Caucasus||243.76458|
|absolute Star et al. (H)||13.5|